21460063534 has 64 divisors (see below), whose sum is σ = 40963829760. Its totient is φ = 8202332160.

The previous prime is 21460063531. The next prime is 21460063631. The reversal of 21460063534 is 43536006412.

It is a super-3 number, since 3×21460063534³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21460063534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21460063531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3850702 + ... + 3856270.

It is an arithmetic number, because the mean of its divisors is an integer number (640059840).

Almost surely, 2^21460063534 is an apocalyptic number.

21460063534 is a deficient number, since it is larger than the sum of its proper divisors (19503766226).

21460063534 is a wasteful number, since it uses less digits than its factorization.

21460063534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 21460063534 its reverse (43536006412), we get a palindrome (64996069946).

The spelling of 21460063534 in words is "twenty-one billion, four hundred sixty million, sixty-three thousand, five hundred thirty-four".